The best way to test if your tank is truly cycled is to add an ammonia source to 3 ppm
and if it gone within 24 hours it has cycled. Its better to be safe than sorry. Good luck and let us know how it goes.
What other fish are on your stocking list? If you have any peaceful fish on your list you want to add them before you add the clowns because they are semi- aggressive. You want to add your semi-aggressive and aggressive fish last. This helps to manage the aggression in a tank.
Hope this helps!